1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2003 Alan L. Cox <alc@cs.rice.edu>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31
32 #include <sys/param.h>
33 #include <sys/malloc.h>
34 #include <vm/vm.h>
35 #include <vm/vm_param.h>
36 #include <vm/vm_page.h>
37 #include <vm/vm_phys.h>
38 #include <vm/vm_dumpset.h>
39 #include <vm/uma.h>
40 #include <vm/uma_int.h>
41 #include <machine/md_var.h>
42
43 void *
44 uma_small_alloc(uma_zone_t zone, vm_size_t bytes, int domain, u_int8_t *flags,
45 int wait)
46 {
47 vm_page_t m;
48 vm_paddr_t pa;
49 void *va;
50
51 *flags = UMA_SLAB_PRIV;
52 m = vm_page_alloc_noobj_domain(domain, malloc2vm_flags(wait) |
53 VM_ALLOC_WIRED);
54 if (m == NULL)
55 return (NULL);
56 pa = m->phys_addr;
57 if ((wait & M_NODUMP) == 0)
58 dump_add_page(pa);
59 va = (void *)PHYS_TO_DMAP(pa);
60 return (va);
61 }
62
63 void
64 uma_small_free(void *mem, vm_size_t size, u_int8_t flags)
65 {
66 vm_page_t m;
67 vm_paddr_t pa;
68
69 pa = DMAP_TO_PHYS((vm_offset_t)mem);
70 dump_drop_page(pa);
71 m = PHYS_TO_VM_PAGE(pa);
72 vm_page_unwire_noq(m);
73 vm_page_free(m);
74 }
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